Download - Rocket Transducer
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Rocket TransducerRocket Transducer
Group 1/3Group 1/3Patrick MorganPatrick Morgan
Lance YoneshigeLance Yoneshige
May 6, 2004May 6, 2004
Instructor: Bruce LiebertInstructor: Bruce LiebertUniversity of Hawaii at ManoaUniversity of Hawaii at Manoa
ME 401ME 401
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DesignDesignAssembly:Assembly:
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Design (Continued)Design (Continued) Base:Base:
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Design (Continued)Design (Continued) Beam:Beam:
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Design (Continued)Design (Continued)
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Design (Continued)Design (Continued)
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Test LaunchTest Launch
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Software CorrectionSoftware Correction Attenuation Attenuation
Use of “Fired” & “Unfired” Use of “Fired” & “Unfired” datadata
Cut-off FrequencyCut-off Frequency Input & Output Cut-off Input & Output Cut-off
Frequency determined to be Frequency determined to be 22 Hz for 99%; 9 Hz for 95%.22 Hz for 99%; 9 Hz for 95%.
21
222
21
nn ff
ffA
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ResultsResultsHarmonic CharacteristicsHarmonic Characteristics
Fired RocketFired Rocketf_n = 56 Hzf_n = 56 Hz = 0.02= 0.02
Unfired RocketUnfired Rocketf_n = 45 Hzf_n = 45 Hz = 0.02= 0.02
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Results (Continued)Results (Continued)
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Results (Continued)Results (Continued)
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Results (Continued)Results (Continued) Error with 95% of signal: Error with 95% of signal:
M(M(__nn) = 3.3%) = 3.3%
2
1222
21
nnnM
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Questions?Questions?